# Changelog

Changes to the Arche API, newest first.

## October 2026

**Arche API v1 is available.**

Arche serves company fundamentals from SEC filings, normalized from XBRL,
available as they were known on any date and traceable to the filing each
figure came from.

- **Financial statements.** Income statements, balance sheets and cash flow
  statements, with every version retained. See [Data model](https://docs.arche.fi/data-model) and
  [Versioning](https://docs.arche.fi/versioning).
- **Point-in-time financials.** Statements as they were known on a given date,
  for research and backtests free of look-ahead bias. See
  [Point-in-time research](https://docs.arche.fi/guides/point-in-time-research).
- **Company identity.** Resolution by CIK, ticker or name. See
  [Company identity](https://docs.arche.fi/identity).
- **Metrics and time series.** A published definition for every metric. See
  [Metric catalog](https://docs.arche.fi/metrics) and [Time series](https://docs.arche.fi/time-series).
- **Provenance.** The filing, concept and context behind each figure. See
  [Provenance](https://docs.arche.fi/provenance).
- **Restatements.** Alerts, version-to-version deltas and signed webhooks. See
  [Restatement drift](https://docs.arche.fi/guides/restatement-drift) and [Webhooks](https://docs.arche.fi/webhooks).
- **Modeling.** Trailing twelve months, growth, ratios and point-in-time
  universe snapshots. See [Modeling](https://docs.arche.fi/modeling).
- **Narrative disclosures.** The text disclosures filed alongside the numbers.
  See [Narrative disclosures](https://docs.arche.fi/disclosures).
- **Coverage and data quality.** Coverage by company and metric, and the quality
  checks behind each statement. See [Coverage and data quality](https://docs.arche.fi/coverage).
- **MCP.** A Model Context Protocol server for AI agents. See [MCP](https://docs.arche.fi/mcp).
- **Bulk export.** The full corpus as daily Parquet snapshots. See
  [Bulk export](https://docs.arche.fi/bulk-export).

Five plans are available, from Free to Enterprise. See
[Rate limits](https://docs.arche.fi/rate-limits) for what each includes.